package com.ithema.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.conditions.query.LambdaQueryChainWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ithema.reggie.common.R;
import com.ithema.reggie.entity.Employee;
import com.ithema.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.jetbrains.annotations.NotNull;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")  //后台登录功能
    public R<Employee> login(HttpServletRequest request, @RequestBody @NotNull Employee employee){
        /**
         * 处理逻辑如下：
         */
        // 1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp =employeeService.getOne(queryWrapper);


        //   3、如果没有查询到则返回登录失败结果

        if(emp==null){
            return R.error("登录失败");
        }

        //  * 4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");

        }
        //  * 5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus()==0){
            return R.error("账号已禁用");

        }

        // * 6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码123456，需要进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
      //  employee.setCreateTime(LocalDateTime.now());
      //  employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户的id
       // long empId = (long) request.getSession().getAttribute("employee");
       // employee.setCreateUser(empId);
       // employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 用户分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
    log.info("page = {},pageSize {} ,name = {}",page,pageSize,name);

    //构造分页构造器
    Page pageInfo =new Page(page,pageSize);

    //构造条件构造器
    LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper();
    // 1 添加过滤条件
    queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
    // 2 添加排序条件
    queryWrapper.orderByDesc(Employee::getUpdateTime);

    //执行查询
    employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
      * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id:{}",id);

      //  long empId = (long) request.getSession().getAttribute("employee");
      //  employee.setUpdateTime(LocalDateTime.now());
      //  employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");

    }
    @GetMapping("/{id}")
    private R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);           //能直接保存成功，就能显示，是因为在新增员工的方法中点击保存就能保存成功
        if(employee!=null){
            return R.success(employee);

        }
        return R.error("未查询到该员工的相应信息");
    }

}
